Cinematographic machine



E. PLUDERI. CINEMATOGRAPHIC MACHINE. APPLICATION FILED APR. 4, 191a.

Patented Oct. 25, 1921.

2 SHEETS-SHEET I.

5, 1921. SHEET 2 HINE.

Patented 0c.

E. PLUDERI. CINEMATOGRAPHIC MAC APPLICATION FILED APR.4,

. 1 UNITED STATES ERALDG ELUDERI, 01* TURBO MILAINESE,

AND ROBERTO FRIGERIO, BOTH OF MILAN, ITALY.

warm

ITALY, ASSIGNOR TO ETTORE GINEMATGGRAPHIC TEACHINE.

wearer.

Application filed. April Q,

T 0 all whom it may concern:

Be it known that l, ERALDO PLUDERI, subject of the King of Italy,resident of Turro Milanese, in the Kingdom of Italy, have invented newand useful Improvements in and Relating to Cinematographic Machines, ofwhich the following is a specification.

The object of the present invention relates to cinematographic machinesand especially to machines for films having several photographs onhorizontal sets and provides the means for a step by step horizontaldisplacement of the car or slide, said means serving also as a guideduring the displacement of the car.

The machine comprising the said improvement serves both to obtain thephotographs on the films and to project the film photographs on ascreen.

These novel features are represented, only by way of example, in theannexed drawings, in which Fi ure 1 shows the inside of the cinematograpic machine as seen from the front.

Fig. 2 shows the same as seen from above, Fig. 3 shows the car on alarger scale as seen from the front,

Figs. 4 and 5 show respectively a film with sets of five and twophotographs, with the partition lines between the adjacent photographs.

In the said figures:

a is the fixed window formed in the casing of the machine, and a is amovable window having a length of so many times the length of window aas is the number of photographs on each horizbntalrow in the film, sothat in any displaced position of the car the projection of the imagescan be made on the screen through windows a and a.

b is the step-by-step horizontally moving car carrying the film andhaving a side projection b in shape of a frame, the whole after eachcomplete journey in either horizontal direction is advanced by a step inthe sense of its own length in order to bring before the window a insuccession all the horizontal photograph sets.

0 is. a gear in shape of a four-teeth Malta cross operating the crossmotion of the film for the case of films having horizontal sets of twophotographs; when the film has for instance five. photograph sets,- thisgear is fitted with ten teeth, (Fig. 3) and generally Specification oiLetters Patent.

. sponding Patented @ctt e5, roan 1918. Serial No. 226,695.

has the number of teeth double the number of photographs of eachhorizontal set.

e is a disk keyed on a shaft f actuated through bevel gears g by thecountershaft p, which in its turn is driven from the main shaft 9through spur gear, 9 ceing actuated by means of a crank r; a pin tfitted to the disk 6, engages the four pointed Malta cross or gear 0 andcauses the latter to advance one step at each revolution of the disk 6.8 is the ohturator.

()n the spindle 2' of the Malta cross 0 a cam or eccentric Z is keyed,the cam profile being designed to suit the machine type concerned. Thecam periphery bears against the sides 72 b" of the car I) pushing itbackward and forward and accompanyin it throughout its stroke so as toprevent t e vibrations and small displacements of the car.

Two opposite portions of the eccentric 0 are in 'shape of arcs ofcircles having their center at 2', so that the carb may stand still fora time during which the longitudinal advancement of the film takes lace;namely: the outline of the cam is suc that, during a quarterrevolution-the car is moved a full step in one direction and during thefollowing quarter revolution owing to the circular outline of theconcerned portion of the cam, the car is not moved transversely and inthe meantime the film is moved longitudinally one step.

m m are vertical and n n horizontal fiat ribs (Fig. 3) rojecting fromthe surface of the car 6 an correspond to the partition lines m n (Figs.4 and 5) of the various photographs of the film for the purpose ofholding the film away from the car surface during the horizontal andvertical displacement of the film.

d is a shaft operating to cause the longitudinal motion of the film andin any known manner, for instance as shown, by means of a finger d whichintermittently rotates a shaft (1" fitted on the moving car and having atoothed wheel d onit, a tooth of which is actuated at each revolution offinger d to permit of the shaft d" bein actuatcd whatever may be theposition 0 the car; the toothed wheel is of a width correto thedisplacement of'the car; the finger d is placed on the shaft (13 in sucha position and the ratio between the speed of the. main shaft p and ofthe'siaft d 18 such ion , takes dow formed in the machine, a drivingshaft actuated by crank handle, a shaft operating the longitudinaldisplacement of the film and a shaft operating the transversedisplacement of the car and the rotation of the obturator, both shaftsbeing driven by said driving shaft, a disk keyed on the second namedoperating shaft fitted with a projecting pin, a gear in shape of a Maltacross cooperating with said pin, an eccentric fast with the Malta crossand revolving within a frame forming an extension of the car and leanlngwith its periphery 1n successlon against either of two opposed sides ofthe frame, projecting ribs on the surface of the car to afford a supportto the film in correspondence to the separation lines between thephotograms, an obturator fitted on the said second named shaft,substantially as and to the purposes set forth.

2. In a cinematographic machine for films carrying horizontal sets ofphotograms and including a casing having a window therein; a car mountedto slide transversely relatively to the window, a manually actuateddriving shaft, a shaft for causing longitudinal displacement of thefilm, a shaft for causing transverse displacement of the film and the.obturator, an obturator on-the second named shaft both of said shaftsbeing driven by the said driving shaft, a disk secured on the secondnamed operating shaft and a pin projecting therefrom, a Malta. crossgear cooperating with said pin; an eccentric rigidly mounted on saidMalta gear, a frame extension on the car, said eccentric revolvingwithin said frame extension and contacting with its either of twoopposed sides of the frame, ribs projecting from the surface of the car,said ribs providing a support to the film corresponding to lines ofseparation between the photograms. l

3. A cinematographic machine for films having horizontal sets ofphotographs comprising in combination a car sliding transverselyrelatively to a window formed in the machine; a driving shaft actuatedby a crank handle; a wheel gear actuating a shaft for the transversedisplacement of the film and for rotating the obturator and a shaft forthe longitudinal displacement of the film; a set of bevel gearsconnected to the shaft operating the cross displacement of the film; ashaft driven by the said bevel gears and having thereon the obturatorand a disk fitted with a projectiong pin; a gear in shape of a Maltacross havingia number of teeth double as the number of photographs ofeach horizontal set of the film and actuated by the said projecting pinat each revolution of the disk; an eccentric rigid with the Malta crossand adapted to revolve in a frame formed of an extension of the car todisplace the car transversely and having two opposite ,portions of itsperiphery concentric with its pivot so as to maintain the car at restduring the actuation of two opposite teeth of the Malta cross;projecting ribs on the surface of the car overwhich the film may passarranged in corresponding relation to the partition lines of thephotographs; and a finger carried on the shaft operating thelongitudinal displacement of the film, to longitudi nally displace thefilm while the car remains at rest.

In testimony whereof'I aiiix my signature.

ERALDO PLUDERI.

periphery successively 4

